:root {
  --primary: #0F4C81; /* 深蓝色，更具商业感 */
  --primary-dark: #0A3256; /* 深蓝色暗调 */
  --secondary: #3D7FA6; /* 次要蓝色 */
  --accent: #FF6B35; /* 橙色强调色，增加活力 */
  --light: #F8FAFC; /* 更明亮的背景色 */
  --dark: #1E293B; /* 深色文本 */
  --text-dark: #0F172A; /* 更深的文本色 */
  --text-light: #FFFFFF; /* 白色文本 */
  --gray-light: #E2E8F0; /* 浅灰色 */
  --gray: #64748B; /* 灰色 */
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.05); /* 更柔和的阴影 */
  --shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.1); /* 悬停阴影 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* 平滑过渡 */
  --border-radius: 12px; /* 更大的圆角 */
  --spacing-xs: 0.5rem; /* 超小间距 */
  --spacing-sm: 1rem; /* 小间距 */
  --spacing-md: 1.5rem; /* 中间距 */
  --spacing-lg: 2.5rem; /* 大间距 */
  --spacing-xl: 4rem; /* 超大间距 */
  --font-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; /* 标题字体 */
  --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; /* 正文字体 */
  --font-weight-light: 300; /* 轻字重 */
  --font-weight-normal: 400; /* 正常字重 */
  --font-weight-medium: 500; /* 中等字重 */
  --font-weight-semibold: 600; /* 半粗体 */
  --font-weight-bold: 700; /* 粗体 */
  --font-size-xs: 0.75rem; /* 超小字体 */
  --font-size-sm: 0.875rem; /* 小字体 */
  --font-size-md: 1rem; /* 正常字体 */
  --font-size-lg: 1.125rem; /* 大字体 */
  --font-size-xl: 1.25rem; /* 超大字体 */
  --font-size-2xl: 1.5rem; /* 2倍大字体 */
  --font-size-3xl: 1.875rem; /* 3倍大字体 */
  --font-size-4xl: 2.25rem; /* 4倍大字体 */
  --font-size-5xl: 3rem; /* 5倍大字体 */
  --font-size-6xl: 3.75rem; /* 6倍大字体 */
  --letter-spacing-tight: -0.025em; /* 紧密字间距 */
  --letter-spacing-wide: 0.025em; /* 宽松字间距 */
  --line-height-tight: 1.2; /* 紧凑行高 */
  --line-height-normal: 1.5; /* 正常行高 */
  --line-height-relaxed: 1.625; /* 宽松行高 */
  --max-w-xs: 20rem; /* 最大宽度-超小 */
  --max-w-sm: 24rem; /* 最大宽度-小 */
  --max-w-md: 28rem; /* 最大宽度-中 */
  --max-w-lg: 32rem; /* 最大宽度-大 */
  --max-w-xl: 36rem; /* 最大宽度-超大 */
  --max-w-2xl: 42rem; /* 最大宽度-2倍超大 */
  --max-w-3xl: 48rem; /* 最大宽度-3倍超大 */
  --max-w-4xl: 56rem; /* 最大宽度-4倍超大 */
  --max-w-5xl: 64rem; /* 最大宽度-5倍超大 */
  --max-w-full: 100%; /* 最大宽度-全屏 */
  --ease-in: cubic-bezier(0.4, 0, 1, 1); /* 缓入动画 */
  --ease-out: cubic-bezier(0, 0, 0.2, 1); /* 缓出动画 */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1); /* 缓入缓出动画 */
  --primary: #165DFF;
  --primary-dark: #0E42D2;
  --secondary: #4080FF;
  --accent: #7B68EE;
  --light: #F0F2F5;
  --dark: #1D2129;
  --text-dark: #1D2129;
  --text-light: #FFFFFF;
  --gray-light: #E5E6EB;
  --gray: #86909C;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 12px;
}

.partner-logo {
  width: 140px;
  height: 80px;
  background-color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.partner-logo:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.partner-logo span {
  font-weight: bold;
  color: var(--primary);
  transition: var(--transition);
}

.partner-logo:hover span {
  color: var(--primary-dark);
}

.partners-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 30px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-body);
}

body {
  color: var(--text-dark);
  background-color: var(--light);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background-color: var(--text-light);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-tight);
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: var(--spacing-lg);
}

.nav-links a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: var(--transition);
  padding: var(--spacing-xs) 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.contact-phone {
  display: flex;
  align-items: center;
  font-weight: var(--font-weight-medium);
  color: var(--text-dark);
}

.contact-phone i {
  margin-right: var(--spacing-xs);
  color: var(--primary);
}

.logo-container {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 40px;
  margin-right: 10px;
}

.logo-text {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary);
}

.footer-logo-container {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.footer-logo-img {
  height: 30px;
  margin-right: 8px;
}

.footer-logo-text {
  font-size: 20px;
  font-weight: bold;
  color: var(--text-light);
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

.hero {
  background-color: var(--primary);
  color: var(--text-light);
  padding: var(--spacing-xl) 0;
  background-image: linear-gradient(135deg, var(--primary), var(--primary-dark));
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
}

.hero h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  font-family: var(--font-heading);
}

.highlight {
  color: #FFD700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  position: relative;
}

.highlight::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #FFD700;
  opacity: 0.7;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  max-width: var(--max-w-3xl);
  margin: 0 auto var(--spacing-lg);
  opacity: 0.9;
  line-height: var(--line-height-relaxed);
}

.hero-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  max-width: var(--max-w-4xl);
  margin-left: auto;
  margin-right: auto;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.08);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  transition: var(--transition);
  width: 180px;
  min-height: 140px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-item:hover {
  transform: translateY(-5px);
  background-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-item i {
  font-size: 32px;
  margin-bottom: var(--spacing-sm);
  color: #FFD700;
  transition: var(--transition);
}

.feature-item:hover i {
  transform: scale(1.1);
}

.feature-item span {
  font-weight: var(--font-weight-medium);
  text-align: center;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-cta .btn {
  min-width: 180px;
  text-align: center;
  padding: 0.875rem 1.5rem;
}

.hero-chart {
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 400px;
  height: 400px;
  opacity: 0.1;
  z-index: 1;
  transition: var(--transition);
}

.hero:hover .hero-chart {
  transform: scale(1.05);
  opacity: 0.15;
}

.hero-chart img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.btn-primary {
  background-color: var(--text-light);
  color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--gray-light);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.btn-outline:hover {
  background-color: var(--text-light);
  color: var(--primary);
}

.hero-chart {
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 400px;
  height: 400px;
  opacity: 0.1;
  z-index: 1;
}

.hero-chart img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero p {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto 30px;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow);
}

.btn-primary {
  background-color: var(--text-light);
  color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--gray-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.btn-outline:hover {
  background-color: var(--text-light);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-accent {
  background-color: var(--accent);
  color: var(--text-light);
}

.btn-accent:hover {
  background-color: #e55e2e;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn:hover {
  background-color: var(--gray-light);
  transform: translateY(-2px);
}

.section-title {
  text-align: center;
  margin: 50px 0 30px;
  position: relative;
}

.section-title h2 {
  font-size: 30px;
  color: var(--dark);
  display: inline-block;
  padding-bottom: 10px;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--primary);
}

.section-subtitle {
  text-align: center;
  color: var(--gray);
  margin-bottom: 50px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  margin-bottom: 80px;
}

.card {
  background-color: var(--text-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.card-img {
  width: 100%;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--gray-light);
  position: relative;
  overflow: hidden;
}

.card-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: linear-gradient(to top, rgba(0,0,0,0.2), transparent);
}

.card-img img {
  max-width: 80%;
  max-height: 180px;
  object-fit: contain;
  transition: var(--transition);
}

.card:hover .card-img img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background-color: var(--primary);
  color: var(--text-light);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: bold;
  z-index: 1;
}

.card-content {
  padding: 25px;
}

.card-title {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--dark);
  position: relative;
  padding-bottom: 10px;
}

.card-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background-color: var(--primary);
}

.card-text {
  color: var(--gray);
  margin-bottom: 15px;
  line-height: 1.7;
}

/* 已在上方定义，此处移除重复定义 */

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--dark);
}

.card-text {
  color: var(--gray);
  margin-bottom: 15px;
}

.footer {
  background-color: var(--dark);
  color: var(--text-light);
  padding: 50px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 15px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--gray);
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-light);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--gray);
}

/* About Page Styles */
.about-hero {
  height: 400px;
  background-image: url('../images/about-hero.svg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  text-align: center;
  position: relative;
}

.about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.2);
}

.about-hero-content {
  position: relative;
  z-index: 1;
}

.about-hero h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 60px 0;
}

.about-img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.about-text h2 {
  margin-bottom: 20px;
  color: var(--dark);
}

.about-text p {
  margin-bottom: 15px;
  color: var(--text-dark);
}

.timeline {
  position: relative;
  max-width: 1200px;
  margin: 60px auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 6px;
  background-color: var(--gray-light);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
}

.timeline-item {
  padding: 10px 40px;
  position: relative;
  width: 50%;
  box-sizing: border-box;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -12px;
  background-color: var(--text-light);
  border: 4px solid var(--primary);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}

.timeline-left {
  left: 0;
}

.timeline-right {
  left: 50%;
}

.timeline-right::after {
  left: -12px;
}

.timeline-content {
  padding: 20px 30px;
  background-color: var(--text-light);
  position: relative;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-light);
}

.timeline-year {
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 10px;
}

/* Services Page Styles */
.services-hero {
  height: 400px;
  background-image: url('../images/services-hero.svg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  text-align: center;
  position: relative;
}

.services-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.2);
}

.services-hero-content {
  position: relative;
  z-index: 1;
}

.services-hero h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.service-card {
  text-align: center;
  padding: 30px;
  background-color: var(--text-light);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-light);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.service-icon {
  font-size: 40px;
  color: var(--primary);
  margin-bottom: 20px;
}

/* Investment Page Styles */
.investment-hero {
  height: 400px;
  background-image: url('../images/investment-hero.svg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  text-align: center;
  position: relative;
}

.investment-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.2);
}

.investment-hero-content {
  position: relative;
  z-index: 1;
}

.investment-hero h1 {
  font-size: 42px;
  margin-bottom: 15px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 80px;
}

.news-card {
  background-color: var(--text-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-light);
  height: 100%;
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.news-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-content {
  padding: 20px;
}

.news-date {
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 10px;
}

.news-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--dark);
}

.news-text {
  color: var(--gray);
  margin-bottom: 15px;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .timeline::after {
    left: 31px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }

  .timeline-item::after {
    left: 18px;
  }

  .timeline-right {
    left: 0%;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .section-title h2 {
    font-size: 24px;
  }
}